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Sustainable Chemical Processes
Figure 3 | Sustainable Chemical Processes

Figure 3

From: Unraveling the structural characteristics of lignin in hydrothermal pretreated fibers and manufactured binderless boards from Eucalyptus grandis

Figure 3

Expanded aliphatic oxygenated (δ C –δ H 2.5–6.0 and 50 – 90 ppm; top) and aromatic (δ C –δ H 6.0 – 7.8 and 95 – 135 ppm; bottom) regions of the HSQC NMR spectra of the CEL samples. The spectra are aligned to represent each sample treatments as follows: (a and d) Sample control; (b and e) hot-compressed water pretreated of sample F4-a; (c and f) hot-compressed water pretreated followed by hot pressing of sample F4-b.

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